Upgrade vulnerable moment dependency

package.json

@@ -25,12 +25,6 @@
     "url": "https://github.com/microsoft/ghcrawler"
   },
   "dependencies": {
-    "extend": "3.0.0",
-    "moment": "2.15.2",
-    "node-uuid": "^1.4.7",
-    "parse-link-header": "^0.4.1",
-    "q": "1.4.1",
-    "qlimit": "^0.1.1",
     "amqp10": "noodlefrenzy/node-amqp10#issue295",
     "amqplib": "^0.5.1",
     "applicationinsights": "^0.17.0",
@@ -43,14 +37,20 @@
     "express": "^4.14.0",
     "express-init": "^1.1.0",
     "express-joi": "^0.3.1",
+    "extend": "3.0.0",
     "ghrequestor": "^0.1.6",
     "htmlencode": "0.0.4",
     "ip": "^1.1.4",
     "memory-cache": "^0.1.6",
+    "moment": "^2.21.0",
     "mongodb": "2.2.11",
     "morgan": "^1.7.0",
+    "node-uuid": "^1.4.7",
     "painless-config": "^0.1.0",
+    "parse-link-header": "^0.4.1",
     "promise-retry": "1.1.1",
+    "q": "1.4.1",
+    "qlimit": "^0.1.1",
     "redis": "2.6.3",
     "redis-metrics": "^0.4.1",
     "redis-rate-limiter": "jeffmcaffer/redis-rate-limiter",